385193280 has 56 divisors (see below), whose sum is σ = 1222991712. Its totient is φ = 102717952.

The previous prime is 385193279. The next prime is 385193297. The reversal of 385193280 is 82391583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199662 + ... + 201581.

Almost surely, 2^385193280 is an apocalyptic number.

385193280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385193280 is an abundant number, since it is smaller than the sum of its proper divisors (837798432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385193280 is a wasteful number, since it uses less digits than its factorization.

385193280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401263 (or 401253 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 385193280 is about 19626.3414828133. The cubic root of 385193280 is about 727.6003522364.

The spelling of 385193280 in words is "three hundred eighty-five million, one hundred ninety-three thousand, two hundred eighty".